Integration of industrial gas site with liquid hydrogen production

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United States of America Patent

PATENT NO 10634425
APP PUB NO 20180038638A1
SERIAL NO

15414155

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Abstract

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The method for producing liquid hydrogen can include the steps of: introducing pressurized natural gas from a high pressure natural gas pipeline to a gas processing unit under conditions effective for producing a purified hydrogen stream; and introducing the purified hydrogen stream to a hydrogen liquefaction unit under conditions effective to produce a liquid hydrogen stream, wherein the hydrogen liquefaction unit provides a warm temperature cooling and a cold temperature cooling to the purified hydrogen stream, wherein the warm temperature cooling is provided by utilizing letdown energy of a pressurized stream selected from the group consisting of a nitrogen stream sourced from a nitrogen pipeline, a natural gas stream sourced from the high pressure natural gas pipeline, an air gas sourced from an air separation unit, and combinations thereof, wherein the cold temperature is provided by utilizing letdown energy of the purified hydrogen stream.

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Patent Owner(s)

  • L'AIR LIQUIDE - SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andreev, Kirill Richmond, US 1 11
Franc, Pierre-Etienne Paris, FR 2 12
Guillard, Alain Houston, US 108 458
Roesch, Alexander Katy, US 41 91
Turney, Michael A Houston, US 50 183

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